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AnnPicture Class

Summary

Defines an annotation picture along with its transparency information.

Syntax

C++

public class AnnPicture : DependencyObject

  
Public Class AnnPicture  
   Inherits System.Windows.DependencyObject

public ref class AnnPicture : public System.Windows.DependencyObject

Example

For XAML example, refer to AnnGroupObject.

This example creates an image that has a blue ellipse inside a red rectangle.

Silverlight C#

Silverlight VB

using Leadtools.Windows.Controls; 
using Leadtools.Windows.Annotations; 
using Leadtools.Demos; 
using Leadtools.Help; 
 
private void AnnPicture_AnnPicture(DrawingContext dc) 
{ 
   AnnPicture pic = null; 
   DrawingVisual dv = new DrawingVisual(); 
   using (DrawingContext dvc = dv.RenderOpen()) 
   //Bitmap btmp = new Bitmap(100, 100, PixelFormat.Format32bppArgb)) 
   { 
      dvc.DrawRectangle(Brushes.Red, null, new Rect(0, 0, 100, 100)); 
      dvc.DrawEllipse(Brushes.Red, null, new Point(50, 50), 100, 100); 
      dvc.Close(); 
 
      RenderTargetBitmap btmp = new RenderTargetBitmap(100, 100, 96, 96, PixelFormats.Pbgra32); 
      btmp.Render(dv); 
 
      // initialize a new AnnPicture class for this image 
      pic = new AnnPicture(btmp); 
   } 
 
   if (pic != null && pic.Image != null) 
   { 
      // draw the picture with no transparency 
      Rect rc = new Rect(10, 10, pic.Image.Width, pic.Image.Height); 
      dc.DrawImage(pic.Image, rc); 
 
      // draw the picture without the ellipse (make transparent color = blue) 
      rc.Offset(0, pic.Image.Height + 10); 
      pic.TransparentMode = AnnTransparentMode.UseColor; 
      pic.TransparentColor = Colors.Blue; 
 
 
      dc.DrawImage(pic.Image, rc); 
 
      // draw the picture without the rectangle (use the top left pixel as the transparent color) 
      rc.Offset(0, pic.Image.Height + 10); 
      pic.TransparentMode = AnnTransparentMode.TopLeftPixel; 
 
      dc.DrawImage(pic.Image, rc); 
   } 
}

Imports Leadtools.Windows.Controls 
Imports Leadtools.Windows.Annotations 
 
Private Sub AnnPicture_AnnPicture(ByVal dc As DrawingContext) 
   Dim pic As AnnPicture = Nothing 
   Dim dv As DrawingVisual = New DrawingVisual() 
   Using dvc As DrawingContext = dv.RenderOpen() 
      'Bitmap btmp = new Bitmap(100, 100, PixelFormat.Format32bppArgb)) 
      dvc.DrawRectangle(Brushes.Red, Nothing, New Rect(0, 0, 100, 100)) 
      dvc.DrawEllipse(Brushes.Red, Nothing, New System.Windows.Point(50, 50), 100, 100) 
      dvc.Close() 
 
      Dim btmp As RenderTargetBitmap = New RenderTargetBitmap(100, 100, 96, 96, PixelFormats.Pbgra32) 
      btmp.Render(dv) 
 
      ' initialize a new AnnPicture class for this image 
      pic = New AnnPicture(btmp) 
   End Using 
 
   If Not pic Is Nothing AndAlso Not pic.Image Is Nothing Then 
      ' draw the picture with no transparency 
      Dim rc As Rect = New Rect(10, 10, pic.Image.Width, pic.Image.Height) 
      dc.DrawImage(pic.Image, rc) 
 
      ' draw the picture without the ellipse (make transparent color = blue) 
      rc.Offset(0, pic.Image.Height + 10) 
      pic.TransparentMode = AnnTransparentMode.UseColor 
      pic.TransparentColor = Colors.Blue 
 
 
      dc.DrawImage(pic.Image, rc) 
 
      ' draw the picture without the rectangle (use the top left pixel as the transparent color) 
      rc.Offset(0, pic.Image.Height + 10) 
      pic.TransparentMode = AnnTransparentMode.TopLeftPixel 
 
      dc.DrawImage(pic.Image, rc) 
   End If 
End Sub

using Leadtools.Windows.Controls; 
using Leadtools.Windows.Annotations; 
using Leadtools.Examples; 
//using Leadtools.Help; 
 
private void AnnPicture_AnnPicture() 
{ 
   AnnPicture pic = null; 
 
   Canvas myCanvas = new Canvas(); 
   myCanvas.Width = 100; 
   myCanvas.Height = 100; 
 
   Rectangle rect = new Rectangle(); 
   rect.Fill = new SolidColorBrush(Colors.Red); 
   rect.Width = 100; 
   rect.Height = 100; 
   myCanvas.Children.Add(rect); 
 
   Ellipse elipse = new Ellipse(); 
   elipse.Fill = new SolidColorBrush(Colors.Red); 
   elipse.Width = 100; 
   elipse.Height = 100; 
   myCanvas.Children.Add(elipse); 
 
   WriteableBitmap wb = new WriteableBitmap(200, 200); 
   wb.Render(myCanvas, null); 
   wb.Invalidate(); 
 
   ImageSource img = wb; 
   pic = new AnnPicture((BitmapSource)img); 
}

Imports Leadtools.Windows.Controls 
Imports Leadtools.Windows.Annotations 
 
Private Sub AnnPicture_AnnPicture() 
   Dim pic As AnnPicture = Nothing 
 
   Dim myCanvas As Canvas = New Canvas() 
   myCanvas.Width = 100 
   myCanvas.Height = 100 
 
   Dim rect As Rectangle = New Rectangle() 
   rect.Fill = New SolidColorBrush(Colors.Red) 
   rect.Width = 100 
   rect.Height = 100 
   myCanvas.Children.Add(rect) 
 
   Dim elipse As Ellipse = New Ellipse() 
   elipse.Fill = New SolidColorBrush(Colors.Red) 
   elipse.Width = 100 
   elipse.Height = 100 
   myCanvas.Children.Add(elipse) 
 
   Dim wb As WriteableBitmap = New WriteableBitmap(200, 200) 
   wb.Render(myCanvas, Nothing) 
   wb.Invalidate() 
 
   Dim img As ImageSource = wb 
   pic = New AnnPicture(CType(img, BitmapSource)) 
End Sub

Requirements

Target Platforms

Reference

AnnPicture Members

Leadtools.Windows.Annotations Namespace

Help Version 19.0.2017.10.27

Leadtools.Windows.Annotations Assembly

Introduction

Getting Started

Namespaces

Leadtools.Windows.Annotations Namespace

Assemblies